Babysit/ˈbeɪbisɪt/ Definition 1 of 2Pro Tip 1/3Trust Implications Babysitting implies trust by the parents, as caring for children is a serious responsibility. My neighbors trust me to babysit their kids. Pro Tip 2/3Temporary Role The role is temporary; you watch someone's children for a limited time, not permanently. Can you babysit Saturday night? Pro Tip 3/3Age Flexibility Babysitters are often older children or teenagers, not just adults. My sixteen-year-old cousin will babysit for us.